… is from Condillac, quoted approvingly on page 213 of T.W. Hutchison’s 1978 volume, On Revolutions and Progress in Economic Knowledge; recognize that this quotation is offered – I believe wisely – by a noted historian of economic thought:
It is essential that everyone who wishes to make some progress in the search for truth should know something of the mistakes committed by people like himself who thought they were extending the boundaries of knowledge.
